Nigeria - African Peer Review Mechanism Survey(APRM)-2006, First Round

The collected data will first be checked manually by a team of editors at the Zone. The same team of editors will do the coding before entry to ensure that all entries are accurate, consistent and the questionnaire is ready for processing .A data entry screen was developed using Cspro software. This data management software have in-built range checks that format and correct skip or filter errors at the point of entry. The data were merged at the HQ where structural checking of SPSS were done on the data set before generating tables.
The massiveness of the questionnaire and the size of the sample (22,200) informed NBS to resolve into taking the following decisions:
i. Hiring of additional external hands.
ii. Putting trained personnel on 60 computers to do data entry at the headquarters and two zones Kaduna and Ibadan.
iii. Co-opting members of staff from other Departments/ Units like Censuses and Surveys, Corporate Planning and Technical Coordination, Field Services and Methodology, and Prices unit to join hands with the staff of Computer Management and Information Services for the data entry.
iv. Carrying questionnaires of 10 States each to Zonal Offices at Kaduna, Ibadan and HQ for data entry.
The data entry did not end until 6th November 2006.

All the grouping and the list of staff are provided as external resources.

The data entry was done manually at two zone. The total of sixty desktop computers where used for the entry.The data entry screen was developed in Cspro. Ten operators per Zone were use making the total of sixty operator and six supervisor.
At the HQ about six computer programer where used to merged the data together and generate the table needed. The data was processed EA by EA each EA being processed as a complete unit through each stages of data processing. The EAs goes through the following steps:
1. Questionnaire reception
2. Office editing and coding
3. Data entry
4. Completeness checking
5. Verification entry
6. Back up of raw data
7. Data editing
8. Back up of edited data
Then all the EAs are processed, all the data were concatenated together and then the following steps are completed for all data files;
9. Merging the data
10. Export to SPSS in 2 files (APRMHH - household, APRMIN-Individual)
11. Recording of variables needed for analysis
12. Adding of sample weights
13. Structural checking of SPSS files
14. Data quality tabulations
15. Production of analysis tabulations
After completion of all processing in CSPro, all individual EAs files were backed up before concatenating data together using the files concatenated utility.
For tabulation and analysis SPSS versions 13.0 was used.
Details of each these steps can be found in the data processing documentation, data editing guidelines, data processing programs in CSPro and SPSS and tabulation guidelines.